Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1988-08-01
1989-12-19
Werner, Frank E.
Material or article handling
Vertically swinging load support
Shovel or fork type
414687, B66F 900, E02F 332
Patent
active
048879380
ABSTRACT:
On a work vehicle having a support, an implement carrying swing frame connected to the support by a first pivot pin apparatus, and an elevatable boom connected to the swing frame by a second pivot pin apparatus, a controllable locking apparatus having a boom lock for locking the boom in a substantially vertical position and maintaining the boom against movement, a swing lock for locking the swing frame against side to side movement, and an obstruction for preventing the swing frame from being locked against side to side movement unless the boom is locked against movement, is provided.
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Blumenshine J. W.
Caterpillar Inc.
Eller Jr. James T.
Werner Frank E.
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